/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package javax.servlet.jsp;

/**
 * Contains information about an error, for error pages. The information
 * contained in this instance is meaningless if not used in the context of an
 * error page. To indicate a JSP is an error page, the page author must set the
 * isErrorPage attribute of the page directive to "true".
 *
 * @see PageContext#getErrorData
 * @since 2.0
 */
public final class ErrorData {

	private final Throwable throwable;
	private final int statusCode;
	private final String uri;
	private final String servletName;

	/**
	 * Creates a new ErrorData object.
	 *
	 * @param throwable   The Throwable that is the cause of the error
	 * @param statusCode  The status code of the error
	 * @param uri         The request URI
	 * @param servletName The name of the servlet invoked
	 */
	public ErrorData(Throwable throwable, int statusCode, String uri,
	                 String servletName) {
		this.throwable = throwable;
		this.statusCode = statusCode;
		this.uri = uri;
		this.servletName = servletName;
	}

	/**
	 * Returns the Throwable that caused the error.
	 *
	 * @return The Throwable that caused the error
	 */
	public Throwable getThrowable() {
		return this.throwable;
	}

	/**
	 * Returns the status code of the error.
	 *
	 * @return The status code of the error
	 */
	public int getStatusCode() {
		return this.statusCode;
	}

	/**
	 * Returns the request URI.
	 *
	 * @return The request URI
	 */
	public String getRequestURI() {
		return this.uri;
	}

	/**
	 * Returns the name of the servlet invoked.
	 *
	 * @return The name of the servlet invoked
	 */
	public String getServletName() {
		return this.servletName;
	}
}
